The Philips Sonicare DiamondClean is Sonicare`s best whitening brush head. Designed to work with multiple Sonicare models, these snap-on replacement brush heads feature highly effective diamond-shaped bristles to whiten teeth in just 1 week and gently remove 7x more plaque than a manual toothbrush. Reminder bristles fade to let you know when it's time for replacement. Replace your brush head every 3 months as recommended by the American Dental Association. A fresh brush head every 3 months maximizes the effectiveness of Philips’ unique Sonicare technology.